What updater is the most annoying?

Apple Updater

Apple Software Update is a tool by Apple Inc. that installs the latest version of Apple software. It was originally introduced to Mac users in Mac OS 9. A Windows version has been available since the introduction of iTunes 7. Apple Software Update automatically informs users of new updates. It can be set to check for updates daily, weekly, monthly, or not at all; in addition, it can download and store the associated installation files to be installed at a later date and maintains a history of installed updates.